JPS56127924A - Tape speed detecting circuit - Google Patents
Tape speed detecting circuitInfo
- Publication number
- JPS56127924A JPS56127924A JP3189980A JP3189980A JPS56127924A JP S56127924 A JPS56127924 A JP S56127924A JP 3189980 A JP3189980 A JP 3189980A JP 3189980 A JP3189980 A JP 3189980A JP S56127924 A JPS56127924 A JP S56127924A
- Authority
- JP
- Japan
- Prior art keywords
- speed detecting
- tape
- capstan
- motor
- tape speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/1808—Driving of both record carrier and head
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
PURPOSE:To obtain a tape speed detecting circuit having a high operating stability with a simple structure, by changing the period of the pulse signal obtained with a frequency proportional to the rotating speed of a capstan into the voltage to obtain a tape speed detecting voltage. CONSTITUTION:The magnetic tape 1 is wond round the outer circumferences of the upper and lower drums 2 and 3 in an angle range of about 180 deg.. The upper drum 2 is driven by the drum motor 6. The tape 1 is forwarded by the capstan 7, and the capstan 7 is turned in a prescribed speed by the capstan motor 8. The rotating speed of the motor 8 is detected by the frequency generator 9; and the phase of rotation of the motor 6 is detected by the pulse generator (PG) head 12. Then the change-over pulse RF-SW is produced through the head change-over signal producing circuit 13 for the A and B heads 4A and 4B. The tape speed detecting voltage is obtained through such constitution as mentioned above. As a result, a tape speed detecting circuit can be obtained with a high operating stability and a comparatively simple constitution.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3189980A JPS56127924A (en) | 1980-03-13 | 1980-03-13 | Tape speed detecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3189980A JPS56127924A (en) | 1980-03-13 | 1980-03-13 | Tape speed detecting circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56127924A true JPS56127924A (en) | 1981-10-07 |
JPS6319929B2 JPS6319929B2 (en) | 1988-04-25 |
Family
ID=12343851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3189980A Granted JPS56127924A (en) | 1980-03-13 | 1980-03-13 | Tape speed detecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56127924A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62147974U (en) * | 1985-12-31 | 1987-09-18 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51160527U (en) * | 1975-06-14 | 1976-12-21 | ||
JPS52134407A (en) * | 1976-05-03 | 1977-11-10 | Ampex | Tape deck |
JPS5368208A (en) * | 1976-11-30 | 1978-06-17 | Olympus Optical Co Ltd | Tape recorder with miniature electronic computer |
-
1980
- 1980-03-13 JP JP3189980A patent/JPS56127924A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51160527U (en) * | 1975-06-14 | 1976-12-21 | ||
JPS52134407A (en) * | 1976-05-03 | 1977-11-10 | Ampex | Tape deck |
JPS5368208A (en) * | 1976-11-30 | 1978-06-17 | Olympus Optical Co Ltd | Tape recorder with miniature electronic computer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62147974U (en) * | 1985-12-31 | 1987-09-18 |
Also Published As
Publication number | Publication date |
---|---|
JPS6319929B2 (en) | 1988-04-25 |
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